If this is your first visit, be sure to
check out the FAQ by clicking the
link above. You may have to register
before you can post: click the register link above to proceed. To start viewing messages,
select the forum that you want to visit from the selection below.

Engines and Accessories

For most people reading this article, an introduction to the Electronic Control Unit (ECU) or Electronic Control Module (ECM) of an electronically fuel injected engine is not necessary. Automobiles have been equipped with these units for over twenty years now, in varying levels of sophistication.

Essentially, the ECU or ECM is an onboard computer system that receives input from various sensors and actuators on and in the engine and delivers the programmed amount of fuel based on this input. As computer technology has increased, so has the ability to more accurately monitor engine operations. The result is more performance from less fuel.
...

High performance outboard-powered boats are not just the toys of racers anymore. For the past twenty years, racing outboards have become increasingly popular in the consumer market, and the presence of these high-performance powerplants is a common sight at boat launch ramps these days.

These outboards appeal to many performance boaters for many reasons – the main one being increased power without the extra weight. For example, a 200 horsepower Mercury 2.5 liter engine weighs roughly the same as its 280 horsepower counterpart, yet produces almost a third
...